Gate-valve.



R. L. HIBBARD.

GATE VALVE. APPLICATION FILED OCT. l5 1913.

Patented 0mg. 23,1917.

2 SHEETS-SHEET l.

R. L. HIBBAR.

GATE VALVE. APPucATloN FILED ocT.16. |913.

Patented Oct. 23,1917.

2 SHEETS-SHEET 2. /0

was.

INVENTOH wlTNEsEsrien.

ROBERT L. HIIBBARD, OF SEWICKLEY, PENNSYLVANIA, A SSIGNOR-TO RITER-CONLEY `IVIANUIEJMJ'JJUBIIIN'G'r COMPANY, OF PITTSBURGH, vI]il\T1\l'SYLVANIA, A CORPORATION 3 OF NEW JERSEY.

To all whom z't'may concern:

vBe it` known that I, ROBERT L. HIBBARD,

a citizen of the United AStatesyresiding at Sewickley,in the county of` Allegheny andV State of Pennsylvania, have invented certain new and useful Improvements in Gate- Valves, of which the following `is a speciication. l

The prime object of my invention is to" provide a new and improved gate valve, particularly designed for large capacity work.

In `the accompanying drawing, which illustrates an application of my invention,

Figure 1 is a. vertical sectional view of a gate'valve constructed in accordance `with my invention; l

F'g. 2, a view similar right angles thereto;

Fig. 3, avhorizontal sectional view taken on line III-III of Fig. 1;

Fig. 4, a part elevational and a part sectional view of the valve actuating mechanism; i

Fig. 5, a detailed verticalv sectional view of the upper end of the valve stem and screw operating mechanism connected therewith; and,

to Fig. 1 taken at Fig. 6, a similar view of the lower end of the valve stem and its connection vwith vthe gate. A characteristic andimportant feature v of the present invention resides in the form of valve casingV or housing employed; said casing preferably beingl constructed of boiler plate and inappearance resemblinga huge boiler. f A

As illustratedand as preferred,the casing 1 is cylindrical-in shape land'lias its lipper and lower ends closed respectively by plate member 2 and 3. The casing is formed with diametrically opposed openings 4 and 5 through which fluid inlet and outlet pipes or conduits 6 and7 are entered. AThese pipes project for a considerable distance .within the interior of the casing, as particularly shown by Fig. 1, and interposed between the ends thereof is the gate 85N Gate 8 is vertically movable within the casing. and transversely of the fluid pipes or conduits by means ofthe valve stem 9 and the valve actuating mechanism, hereinafter referred `to, connected therewith.

Located interiorly of the casing and eX- tending longitudinally thereof, I provide guide members 10, said members being 'y GATE-VALVE.'

y Spcification of Letters Patent.

the opposite side of `the valve.

adapted .to `-receive "Patented oet. es, 'iaiftf Applicationled October 16, 1913. Serial No. 795,472., v Y

projections 11 extending I outwardly from the gate 8. vThe valve :gate 8 is designed toV be seated on an inclined valve seat'12 formed on an endof the outlet pipe 5, and in practice, I prefer to employ a bronze wear strip as 13.

v The gate ySlis preferably of the construction shown and comprises a member bulged;

away from the seat face to provide a convex v surface in the: path of the fluid when the vgate is in its closed position, the general configuration of this lface being somewhat similar to a portion of a sphere.` This `en- 1 ables the construction-of a valve of light.

weight compared withitssize by reason of the factthat the wall maybe comparativelyl thin and supported by webs extending from As shown inthe drawings, these webs arel not lcon-l nected on the outlet side of the-valve so that the gate is practically a shell with oneside (the inlet side) closed, the webs being rsuilicient to support the wall against the pressure, the particular shape of the wall face i exposed to the pressure aiding in this respect. As shown, the portion of the gate j coacting with the seat 12 is n nular, thus decreasing the weight of! the gate. In addition, the gate is formed with a centrally disposed compartment v14" in which is located an internally 15, said plug being securedwithinthe compartment by means of apin 16 and nuts or washers 17,.the latter being designed to coact with inwardly projecting lugs 1S formedon the -walls of compartment 14. As par- ;ticularly illustratedfby Fig. 6,- the lower end preferably anthreaded plug ofvalve stem 9 .is screwed into plug 15,and

vof the valve stem with an actuatingl screw- 21 is particularly shown by Fig.' 6, and the drive arrangement in Fig. 4. The screw `19.designatesacap plate secured to they walls ofthe compartment 14 byV meansofl95 ico driving meansform no part of the present invention, but, as illustrated, said means are located on a platform 22 supported by a housing 23, and may include a motor 24 and intermediate gearing 25, or said intermediategearing may be actuated by the hand operating wheel 26.

As will be seen, the gate seats only on its outlet side, the conduit 6 being cut away to permit of the vertical movement of the gate, but theY particular shape of the inlet side of the gate is such as to leave the casingl above the conduits in openfconimunica this point when the valve is being opened.

Since this portion of' the casing is necessarily filled with fluid, the opening of the gate'.Y

will not cause violent movements of the fluid therein during the opening of thegate,

especially movements which mightr tend to afi'ecti the structure oi' provide damage to thel 0'ate itself the shane of the 0ate lendingA o i l e a itself in producing this result.

What I claim is:

1. A gate structure adapted for mains of large diameter comprising a casing having opposing inlet and oiitletfl'uid pipes axially alined and a chamber above saidpipes7 said outlet pipe having` a gate seat inclined to the plane of travel of the gate, a gate vertically.-V movable within the casing between said pipes and having a portion adapted to cof" actv with said seat to close the structure, said gate having a central valve ste'mreceiving compartment, pose the fluid, and ribs seating side of the gate, said inlet pipe being open to the chamber when the gate is closed. y

2. A gate `valve structure adapted for mains of large diameter comiirising a cyy lindrical casing formed of sheet or plate1r finaterial having its ends closed by curved plate members and having diainetrically opposed openingsyjinlet and outlet pipes'entered in said openings, said outlet pipe having a gate seat inclined to the plane of travel of" the gate, a gate vertically movable within the cylindrical casing betiveen said rires chamber above and'below said pipes, said inlet pipe being open to the chamber above v said pipes when the gate is closed.

3. A gate structure adapted for niains of large opposing inlet and outlet fluid'pipes axially alin'ed, said outlet pipe having ing an annular portion adapted to coactf with said seat to close the structure, and

a curved reinforced face to oppose the-flow of' fluid, said inlet pipe being open'tothe casing when the gate is closed.

a relatively thin wall lto op-v leading from the' said casingproviding a cylindrical' diameter comprising a casing having a gate seat!` linclined to the plane of travelof the gate7 tion'adapted to coact with said face'fto close the structureesaid gate being of shell form and reinforced by intersecting ribs on its seating face, said gate havingTa centrally? f disposed valve-stein receiving compartment, means for' securing la stem within the compartment; said inlet pipe being open to the" casing Vwhen the gate is closed.

5.r A; gate structure a'daptedfor mains of 1 large diameter comprising a? casinghavirig opposing inlet and outlet fluid pipesiazxialined, saidl outlet pipe'I having a gate ally the plane of* travel ofthe seat V inclined to gate-,a gater vertically vmovable 'within the'f casing between said pipes; and having p0rtion adapted to coact witlisaidseat to-clos l the structure,saidgat'e hav-ing its inletfa'cfe approximately convex, isaid; vinlet pipe being open to the casing` when the gate 'is closed.

6. A gate structure adaptedfor lmains of large diameter comprisinga casing haviirg opposing inlet and outlet fluid pipes axioutlet pipe hav-ing a gate ally alined, said travel ofthe seat inclined to the plane of' gate,' a gate'verticallyl lmovable within Ytlie casing between said pipes and having a pori i .tion adapted to coact with said seat to close ,the structure, said gatel embodyinga; rela-` tively tliin wall curved to approximate ow of convex face adapted to oppose the webs fiuid; said facel being. supported byleadin'f from theyseatinf Iside of the Oate b ZD b 7 said inlet pipe being open to the casingA when-the gate is'close'd. l A H 7 A gate structure comprisinga casing-2 having opposed inlet and:v outlet fluid pipes extending thereinto, with the outletj pipe having a gateseat, diainetricallyjopposedE guides extending vertically within the cas-k ing,=a gate'finovable vertically within said guides and havingan annular portion adapted to coact with saidseat to close the struc'- ture,y said gate having its inlet face curved to approximate a convexsurface. y In testimony whereof Iaflix'iny signature in presence'of two witnesses.'V

ROBERT L. `HIBBARD- [n SUT Witnessesz: V

J. L. Hernan, ADA-M.v STEELE;

Copies of this patent may be obtained for've cents each, byadd'ressing the Commissioner ofi'Patnts," Washington, D. C. 

